# Kubectl 客户端安装和使用指南

## 安装 Kubectl 客户端

### 方法一：使用 curl（推荐）

```bash
curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"

sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
```

### 方法二：使用包管理器

**Ubuntu/Debian:**
```bash
sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubectl
```
### 验证安装

```bash
kubectl version --client
```


### 配置 ~/.kube/config

**方法一：手动创建配置文件**

```bash
mkdir -p ~/.kube
cat > ~/.kube/config << EOF
apiVersion: v1
clusters:
- cluster:
    server: https://your-k8s-api-server:6443
    insecure-skip-tls-verify: true
  name: my-cluster
contexts:
- context:
    cluster: my-cluster
    user: my-user
  name: my-context
current-context: my-context
kind: Config
preferences: {}
users:
- name: my-user
  user:
    token: your-auth-token
EOF
```

**方法二：使用 kubectl config 命令**

```bash
kubectl config set-cluster my-cluster --server=https://your-k8s-api-server:6443 --insecure-skip-tls-verify=true
kubectl config set-credentials my-user --token=your-auth-token
kubectl config set-context my-context --cluster=my-cluster --user=my-user
kubectl config use-context my-context
```

**方法三：复制服务器配置文件**

```bash
# 从 Kubernetes 服务器复制配置文件到本地
scp root@your-k8s-master:/etc/kubernetes/admin.conf ~/.kube/config
chmod 600 ~/.kube/config
```

### 验证配置

```bash
kubectl cluster-info
kubectl get nodes
```